pgmfi.org

I'm not sure what I'm doing wrong but I found out which wires are the RX and TX on the USB. It gives me some funky numbers so I guess it works. How do you make it ECHO? And with the voltage question what are you suppose to read from CN2 pin 1 to pin#2 and pin #3?. So far the readins I get is 4.97 volts on one of them and then 5.02. Are these correct? I'm also Using ECU control as the Datalogger. Also can anybody tell me what Neptune is and where I can get this and The Crome Editor?